Swift Tutorial - Tutorialspoint

Syntax

The syntax of a do...while loop in Swift is:

do

{

statement(s);

}while( condition );

It should be noted that the conditional expression appears at the end of the loop, so the
statement(s) in the loop execute once before the condition is tested. If the condition is
true, the control flow jumps back up to do, and the statement(s) in the loop execute again.
This process repeats until the given condition becomes false.

The number 0, the strings '0' and "", the empty list(), and undef are all false in a Boolean
context and all other values are true. Negation of a true value by! or not returns a special
false value.

Flow Diagram

Example

import Cocoa

var index = 10

do{

println( "Value of index is \(index)")